ˈbeɪsɪn ˈbɑːθ.ɹuːm ˈbæθɹum ˈbæθ.ɹuːm ˈkæn ˈdʒɑn ˈdʒɒn læv ˈlæv.ə.tɹi ˈlæv.ə.tɔɹ.i ˈpɹɪv.i ˈtɔɪ.lət a toilet that is cleaned of waste by the flow of water through it a room or building equipped with one or more toilets a bathroom sink that is permanently installed and connected to a water supply and drainpipe; where you can wash your hands and face he ran some water in the basin and splashed it on his face